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preg_replace_with_count

Note

This is a point-in-time snapshot of the API documentation from January 2026. Going forward, we will not be maintaining a public copy of these references, and recommend users to refer to the built-in signature helpers available in the Hack LSP instead for complete and up-to-date information.

function preg_replace_with_count(
  mixed $pattern,
  mixed $replacement,
  mixed $subject,
  int $limit,
  inout ?int $count,
): mixed;

Parameters​

  • mixed $pattern
  • mixed $replacement
  • mixed $subject
  • int $limit
  • inout ?int $count

Returns​

  • mixed